<div class="apiDetail">
    <div>
        <h2><span class="path">setting.callback.</span>onAsyncError</h2>
        <h2><span>Function(event, treeId, treeNode, XMLHttpRequest, textStatus, errorThrown)</span>&nbsp;</h2>
        <h3>概述<span class="h3_info">[ 依赖 <span class="highlight_green">jquery.ztree.core</span> 核心 js ]</span></h3>
        <div class="desc">
            <p></p>
            <div class="longdesc">
                <p>用于捕获异步加载出现异常错误的事件回调函数</p>
                <p class="highlight_red">如果设置了 setting.callback.beforeAsync 方法，且返回 false，将无法触发 onAsyncSuccess /
                    onAsyncError 事件回调函数。</p>
                <p>默认值：null</p>
            </div>
        </div>
        <h3>Function 参数说明</h3>
        <div class="desc">
            <h4><b>event</b><span>js event 对象</span></h4>
            <p>标准的 js event 对象</p>
            <h4 class="topLine"><b>treeId</b><span>String</span></h4>
            <p>对应 zTree 的 <b class="highlight_red">treeId</b>，便于用户操控</p>
            <h4 class="topLine"><b>treeNode</b><span>JSON</span></h4>
            <p>进行异步加载的父节点 JSON 数据对象</p>
            <p class="highlight_red">针对根进行异步加载时，treeNode = null</p>
            <h4 class="topLine"><b>XMLHttpRequest</b><span>String</span></h4>
            <p>标准 XMLHttpRequest 对象，请参考 JQuery API 文档。</p>
            <h4 class="topLine"><b>textStatus</b><span>String</span></h4>
            <p>请求状态：success，error，请参考 JQuery API 文档。</p>
            <h4 class="topLine"><b>errorThrown</b><span>String</span></h4>
            <p>errorThrown 只有当异常发生时才会被传递，请参考 JQuery API 文档。</p>
        </div>
        <h3>setting & function 举例</h3>
        <h4>1. 异步加载出现异常后，弹出错误信息</h4>
        <pre xmlns=""><code>function zTreeOnAsyncError(event, treeId, treeNode, XMLHttpRequest, textStatus, errorThrown) {
    alert(XMLHttpRequest);
};
var setting = {
	callback: {
		onAsyncError: zTreeOnAsyncError
	}
};
......</code></pre>
    </div>
</div>